Car retarder



March 15,1927. Q 1,620,943

- w. BRASACK GAR RETARDER Filed April 28, 1922 2 sheets-sheet 1 Filed April 28, 1922 2 Sheets-Sheet 2 Patented Mar. 15, 1927.

WILL AM-B ASAOK; on (as BARK, Rumors:

scan nan/earns This invention relatesgenerally tobi'akes 7' an nme ion re arding: d vi s-"an h P t o lar re er nce e ec r ten en One of theobjectsof'this invention, is the provision,

5 of a device of this character wherein the 3iQ Ql t-P3Q 1 Qdyhep lll f: her ilir dcan is always n d r ct PIQPQ iOI o: e

a magnitude of this mi l; In other rds, a

ig t-en mpty n .1. light' rade willv n-a steenergg ede will produce corresp ndinglyz .gr a en fricti n no 1995. bi ity hating the. troublesome brake band- Which.

mustn eessari y he. adiu tecl t mee e.

' "gent est-p sib e oadl n Ar en Q 3YQ-i S Q enas bility 1 of beam. ars ever mngg t e; fi vietiona vpower eihe br e and and,

fi rthen requ e -freq ent adiu me l-=f w r m ,1

object resides in the prqvisionaoff.

' 2a: writing-ne t the a t r hin'g;ma of e. e-

7 Another whi h void rans nii sath ea i ect y to the ropes or the mechanlsm.

Figure 1 is a fragmentary side elevationit er-can:wit thein en i pp a 30 ,Figure 2- is a detachedland fragmentary front" elevation of the two swivel sheaves; and a V Figure 3 is a detached detail and top plan view of the drum.

sists of a drum (1) which is divided into two compartments by a central flange (2), each compartment'being arranged for a rope which is attached'to same. The arrangement of the two ro as or cables is such that when one rope 3) is being wound upon the drum on one compartment, the other rope (4) unwinds and vice versa. The drum is mounted on a shaft (5) which is carried bytwo swinging arms (6), the arms in turn being pivoted onthe pin (7) carried by V bracket (8). The bracket (8) is secured by bolts (9) to a post or anyother suitable part- 1 ofthe'buildingor separate structure. Two brake wheels (10) are connected to the drum either by casting brake wheels and drum in one piece or attaching both independently to shaft (5). The bifurcated lever ('11) is rigidly connected to the two swinging arms and can be liftedby a rope (12) leading over swivel block (13) to hand lever (14:). Hand of arun-away cantor-(excessiveJfnicties for lightleads The car retarder as herein illustrated, con- ,the other end of which is wound'on as; n'QQ si i etea onlpin 15;) momma,

I1 iac1et,-(,l6 and is op rat d by aiand (1.7) attached to samefp The, hand 163661 mechanism can. be; attached by, bolts, (1'8) 9 the li e; to, any su table pa z' h uildre tr l of he brak is desirable A ibri Qketl (19;) is attached thebolts' (20) t he same: 199s hich arfies hed 'nrnan b ake wheel-"mech nism: Th h aqket ea ries g; tireke shjoea 2 madeofny-L sui ab e mam mean wheels, (10;), name a The ope-s; nd 9. e en the t oin 1 sheaves 2); Whichn-rn on pain 5 and lthehtwo b -rake;

, 1 I rest unene-thesebm ish es-assh wnsomdrawing ngs (24-) The; a er a e attached by bolts t a ommone reck t" (25) in ch; mann thatthe swivel sheaves, may swinglsidewise a limited 'a-mount bilt'cann t"f liQ t-(201 attached by bolt 1 to: postpri other suitable support. i g} v 'Ehe fr e-en s ont he 'enes; (fi nd) c ry a Qmpglressiqn pl t mg -t (2. and-te minali-w chains-*- (28) rhaazinggam rQn=;-h3 4 @291 t:-=

z es dihe nd One rare 1); s attach .biethes ainttgel tei. l e@ a :1r 1a 7. ar-; Q3 h meterdeeli "Whi e; thsn hes .mize t lies free on the ground on the sideof the track. The whole mechanism is preferably mounted on a post placed nearthe track on which the railroad cars are to be retarded. The operation of my invention may in one instance or application as illustrated, be

described as follows: 3 The preferable track grade'for railroad cars is about 2 percent which is of a slope to permit a railroad car to start and move by gravity. The railroad car is attached by chain (28) to rope (4) 9 (1), as shown on-drawing. The pull in the rope (4) produced by the railroad car tends to rotate the drum (1) in" arclockwise'direction, but inasmuch as drum (1) and brake wheels (10) are mounted onfithe same shaft (5) and are securely fastened together, the

rope pull produces "also a pressure on the brake wheels which bear againsttheir brake shoes (21) and thus create a frictional rev sistance which will counteract the tendency J of the-drum (1) to rotate and thereby re' tain the drum in a stationary position. If: it is desired't'omove or further drop the rail road car by'gravity, the operator exerts a,

drum

lo n

pull on handhold (17) which through lever w V r (14)and rope (12) will tend to lift lever (11) and shaft (5) thereby relieving the pressure of drums (10) on their brake shoes (21) so that drum 1) is now free to rotate which in turn will allow the railroad car to move ahead. While the rope (4) is being unwound by the moving railroad car the other rope (3) is being wound up, and when rope (4) is completely unwound and railroad car retarded to the'end of its travel, the rope (3) will be completely wound up and ready to be attached to another car. The opera tion of the car retarder for. rope will be the same as for rope (4) except that the direction of rotation of drum (1) will be counter clockwise. The springs (27) interposed between the ropes (.3 and 4) and the chains (28) will preserve the ropes and the whole mechanism from any sudden shocks; The balls (29) will keep the chains (28) c from detaching from the railroad car;

7 duced by the ropes (3 or 4) on shaft (5) It will benoted that the pressures proare not the same, being larger for rope 3) than for rope (4). But owing to'the fact that the hinge pin (7 is locatedon a higher elevation than shaft (5) and taking the difference in direction of rotation into ac- :count, the friction of brake wheels (10) on will be practically the same.

I claim: 1. In a brake,'a drum, a flexible member adapted to be wound on said drum, and

brake shoes (21) produced by these pressures means finterposing frictional resistance in- "duced by the pull on said member for retainmgsaid drum against rotation, said means including a stat onary brake shoe adapted to support the entire weight of said drum during the braking operation of same.

2. In a brake, a drum, a flexible member adapted to be wound on said drum, a stationary brake shoe normally adapted to support the entire weight of said drum during the braking position thereof, and means for interposing frictional resistance between said drum and said shoe induced by the pull on said flexible member. I

3. A brake as embodied in claim 2, and including means for lifting said drum from contact with said shoe to'permit its free rotation. 4. In a brake, a two compartment drum,

a pair of flexible members adapted foralternate 'winding'on said drum compartments, a stationary brake shoe, a brake wheel connected to said drum and normally adapted to contact with said shoe, and means for bodily lifting said brake wheel and drum to release said drum from said stationary brake shoe with said drum, a pair of stationary brake shoes adapted for'contact by said brake wheels, and means mounted eccentrically to the axis of said drum and brake wheelsforc lifting same to release said drum'for free rotation.

In witness whereof, I have hereunto subscribed my name, this 26th day 0f April,

, WILLIAM BRASACK. 

